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Here, you can find the paragraph below:
But I don't understand how a non-detection can mean the detection pf gravitational waves!
Anyone knows what's the point?
Thanks
Wikipedia said:In February 2007, GRB 070201, a short gamma-ray burst, arrived at Earth from the direction of the Andromeda Galaxy, a nearby galaxy. The prevailing explanation of most short gamma-ray bursts is the merger of a neutron star with either a neutron star or black hole. LIGO reported a non-detection for GRB 070201, ruling out a merger at the distance of Andromeda with high confidence. Such a constraint is predicated on LIGO eventually demonstrating a direct detection of gravitational waves.
But I don't understand how a non-detection can mean the detection pf gravitational waves!
Anyone knows what's the point?
Thanks